CBSE Class 12-science Answered

Entire syllabus is important in p-block elements. Please go through the NCERT questions, live test series and model tests to make the concepts more understandable.

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However you can go through the following questions..

p-Block Elements

Structures of Oxoacids: phosphorus, sulphur,

Structures of Fluoride: sulphur, xenon, bromine

Interhalogen compounds

Basicity of group 15 element

Most important topics/questions

1. Structures of PCl₅, H2SO₃, H₂SO₄, H₂S₂O₈, H₂S₂O₇, HOCl, HClO₂, HClO₃, HClO₄
2. Complete the reactions:
3. Conceptual questions:

• NF₃ is an exothermic compound whereas NCl₃ is not.
• NH₃ is a stronger base than PH₃. Why?
• Arrange the following in order of the indicated property:
  • F₂, Cl₂, Br₂, I₂ in increasing order of bond dissociation enthalpy
  • HF, HCl, HBr, HI in increasing order of acidic strength
  • NH₃, PH₃, AsH₃, SbH₃, BiH₃ in increasing order of basic strength
• What are interhalogen compounds?